MOLTING HORMONE, JUVENILE-HORMONE AND THE ULTRASTRUCTURE OF THE FAT-BODY OF ADULT SARCOPHAGA-BULLATA (DIPTERA)
MOLTING HORMONE, JUVENILE-HORMONE AND THE ULTRASTRUCTURE OF THE FAT-BODY OF ADULT SARCOPHAGA-BULLATA (DIPTERA)
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DOI：
10.1007/bf00216728
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发表时间：
1981-01-01
影响因子：
3.6
通讯作者：
DELOOF, A
中科院分区：
文献类型：
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作者：
STOPPIE, P;BRIERS, T;DELOOF, A
在卵胎生蝇（S. bullata）中，卵黄发生是周期性的：这一过程反映在脂肪体细胞和卵细胞的超微结构变化中。羽化时幼虫脂肪体尚未完全消失。在卵黄形成过程中，脂肪体细胞专门用于密集的蛋白质合成，显示出非常广泛的 RER（粗面内质网）和大量的质膜内陷。当卵子下降到输卵管完成胚胎发生时，这些特征就会消失。卵母细胞的主要特征是其非常突出的 SER（平滑内质网）。男性的脂肪体细胞从来没有像女性那样专门用于蛋白质合成。给雄性喂食蜕皮甾酮 3 天或更长时间，会诱导相当广泛的蛋白质合成亚细胞装置，即质膜内陷和广泛的 RER。保幼激素在这方面完全无效。蜕皮甾酮和保幼激素对雄性卵细胞都有显着但不同的影响。
In the ovoviviparous fly, S. bullata, vitellogenesis is cyclic: a process reflected in ultrastructural changes in the fat body cells and oenocytes. At eclosion the larval fat body has not yet completely disappeared. During vitellogenesis the fat body cells are specialized for intensive protein synthesis showing a very extensive RER [rough endoplasmic reticulum] and numerous invaginations of the plasma membrane. These features disappear when the eggs descend into the oviducts to complete embryogenesis. The predominant feature of the oenocytes is their very prominent SER [smooth endoplasmic reticulum]. The fat body cells of the males are never as specialized for protein synthesis as those of the females. Feeding of ecdysterone to males for 3 or more days induces a rather extensive subcellular apparatus for protein synthesis, i.e., invaginations of the plasma membrane and an extensive RER. Juvenile hormone is completely ineffective in this respect. Both ecdysterone and juvenile hormone have pronounced but different effects on the oenocytes of males.